Case mounting



2 Sheets-Sheet 1 ssn/46 June l5, 1954 s. BEBER cAsE MOUNTING Filed Aug; 2o, `1951 June 15, 1954 s, BEBER A 2,681,163

CASE MOUNTING Filed Aug. 20, 1951 v2 Sheets-Sheet 2 Patented June 15, 1954 UNITED STATES PATENT OFFICE CASE MGUNTING Samuel L. Beber, Los Angeles, Calif. Application August 20, 1951, Serial No. 242,677

11 Claims.

This invention has to do with a case mounting and is more specifically concerned with a structure applicable to a typical wall, and it is a general object of the invention to provide a structure serving to eiiectively and securely mount a case, housing, or other like element, in or on a wall.

In the usual building, whether dwelling or for commercial use, it is common to employ walls having facings of lath and plaster, and this type of construction is such that it ordinarily requires that casings, housing, or like parts of accessories to be mounted on or in such walls, must be incorporated during construction, as otherwise serious diiiiculties and complications are likely to be encountered. Cases or housings of the type referred to may be parts of cabinets of various kinds, or for various purposes, may be the bodies or shells of lighting fixtures, etc., and, in practice, such elements are usually formed of sheet metal.

The structure provided by the present invention is in most cases applied to what may be termed the facing of a wall, which element of a building is ordinarily formed of lath or plasterboard and plaster carried thereon. The term facing as hereinafter used is intended to include not only lath or wallboard and plaster, but any other like or similar structure or combination of elements. Furthermore, the term. wall when applied to or used in connection with part of a building is intended to include not only the vertical walls or partitions occurring in such building, but also is intended to include ceilings and other such elements of construction.

It is a general object of this invention to provide a case mounting applicable to a Wall facing, and requiring only the forming of a simple or plain opening in the wall facing in order to accommodate the mounting or the case carried thereby. In accordance with the present invention the opening required in the wall facing need be only a simple aperture that accomrnodates the case, and the structure of the present invention is such that it in no way mars, pierces or mutilates the Wall facing in which the opening is provided.

Another object of this invention is to provide a casing mounting of the general character referred to which requires no application of screws or like fasteners to the wall or to the wall facing.

A further object of the invention is to provide l a case mounting of the character referred to that can be applied easily and quickly and without the use of special tools or equipment, and without the exercise of special skill or care.

A further object of the invention is to provide a casing mounting of the general character referred to involving clamp means engaging the wall facing, and which serves to support or mount the casing so that it is securely and rigidly held stationary relative to the Wall.

It is another object of this invention to provide a casing mounting of the general character referred to that is exceedingly simple in form and construction and is inexpensive of manufacture, making the structure commercially practical.

The invention in a typical case is applied to a wall facing in which a suitable opening has been cut and it serve to mount a case in the opening. The case may be a sheet metal unit of box-like form having flat side walls and a bottom. In a situation where the case is the body of a lighting fixture there may be a closure provided to nt over the open front of the case, and in such a situation the closure can be suitably connected, as, for instance, linked to the case. The present invention provides one or more units or clamp means on or in connection with the case and engageable with the casing of the wall. Where the case is box-like it is preferred to employ two clamp means on opposite sides of the case, and these means may correspond in form and construction. A typical clamp means embodying the invention involves two jaws, one an inside jaw and the other an outside jaw, and means connecting the jaws together and to the Wall of the case. The jaws may be similar in that each may involve an elongate body in the form of a strip or band of sheet metal, and it may involve one or more teeth or grippers projecting from one longitudinal edge of the body. In a typical situation it is advantageous that the inside jaw have a plurality of spaced grippers, whereas the outside jaw can be advantageously formed with but one gripper. Openings, preferably slots, are provided in the wall of a case to pass the grippers of the inside jaw, and in a typical situation when the case has been inserted in the opening in the wall facing the inside jaw is applied so its body bears against the inside of the case wall, while the grippers of the jaw project through the slots in the wall to overlie the inside of the wall facing. The outside jaw has its body applied over the body of the inside jaw with its gripper or grippers projecting to overlie the outside of the wall facing. The connecting means serves to connect the jaws against movement relative to each other and to connect the jaws to the wall side jaw have portions that will pass or receive.

the projections, and elongated portions or slots which cooperate with the projections to establish the desired gripping engagement between, the .l

jaws and the facing of the wall. In a preferred construction the last mentioned portions of the."

openings in the body of the outside jaw may be` elongate or slot-like openings, pitched or angu-v larly related to the longitudinal axis of the jaw so that this jaw can be shifted lengthwise, with resulting cam or wedge action that causes effective clamping of the wall facing between the grippers of the jaws. In a preferred construction the projections on the wall of the case are screws and when the structure has been set or operated to establish the desired gripping of the wall facing, the projections can be operated, for instance tightened, to thereby clamp and, in effect, lock the structure in the clamping position. In one form of the invention an operating means may be provided, for instance, a screw means, serving to operate the outside jaw so that its body moves lengthwise to gain the desired cam or clamp action above referred to.

The various objects and features of my invention will be fully understood from the following detailed description of typical preferred forms and applications of the invention, throughout which description reference is madeto the accompanying drawings, in which:

Fig. 1 is a sectional view of a typical lighting fixture embodying the present invention, showing it in working or engaged position with the facing of a wall. Fig. 2 is a sectional view of the struc ture shown in Fig. 1, being a view taken as indicated by line 2--2 on Fig. 1. Fig. 3 is a view taken at one of the side walls of the fixture case,

showing this part free of other elements of the y structure and showing a typical slot construction employed in carrying out the invention. Fig. 4 isa view taken as indicated by line =i-4 on Fig. l, showing the closure of the fixture in an open position. Fig. 5 is a detailed sectional view through a wall facing with a fixture case abutting thefacing at the point where the casing is to be mounted and showing a marking device being employed to mark the facing with a line to indicate the point at which the wall facingmust be cut to provide an opening for thecase. Fig. 6 is a sectional view of an apertured wall facing showing a wall of the xture case after the case has been inserted in the opening in the facing preliminary to the clamp means being installed. Fig. 7 is a view similar to Fig. 6, showing the .inside clamp jaw applied or installed. Fig. 8 is a view similar to Fig. 7 showing the outside clamp jawapplied and a projection on the case holding the clamp jaws engaged together and with the wall of the case... Fig. 9 isa perspective view of the inside clamp jaw showing it freeof the other portions of the structure. Fig. 10 is a perspective view of the outside clamp jaw showing it free of the other portions of the structure.

Fig. 1l

is a View similar to a portion of Fig. 4, showing another form of construction, and Fig. l2 is an enlarged sectional view of a portion of Fig. il, being a view taken as indicated by line |2--I2 on Fig. 11.

As indicated above, the present invention, in practice, can be employed to mount Various elements on or in connection with a wall, and it can be used to advantage to mount a housing, casing, or other such construction. For purpose of example, the invention is here shown and will be described in detail as mounting the case of a lighting fixture and certain aspects of the invention are specifically set forth in connection with a light xture of the recessed type wherein there is aV closure that cooperates with the mounting of the present invention and the casing of the fixture that is held by the structure of the present invention.

In the drawings a typical building wall W is shown as having a facing A and the facing is indicated as involving lath or plasterboard lil at its inner portion and a layer of plaster H at its outer portion. The inner side l2 of the Vfacing is shown plain and smooth, whereas the outer side i3 of the plaster Il is shown plain and smooth and, in practice, is ordinarily finished for instance, coated as by means of paper or plaster.

The particular lighting fixture illustrated in the drawings involves, generally, a housing or case B, illuminating means C in the case, a closure D for the case, and coupling means E connecting the closure and case.

The case B of this type of lighting fixture, that is, of the recessed type of fixture such as is shown in the drawings, may vary widely in size and form and, for example, the one illustrated in the drawings is of simple and'typical form. The particular case B illustrated involves side walls 2l] and a back 22 which elements cooperate to form a forwardly opening box-like structure. In practice it is common to form such parts of sheet metal, and as shown in the drawings the several parts of the case may be simple, fiat, or plain sheet metal plates, and the side walls 2i) may be joined together at their ends by suitable connections, and the back 22 can be joined to the rear edges of the side walls by any suitable means or construction. 'I'he particular case illustrated in the drawings is of the type adapted to be in serted in an opening 25 provided in a wall facing A, so that the outer edges 26 of the side walls of the case are substantially `flush with or just within the outer face I3 of the facing A. In the particular form of fixture illustrated the case B of the fixture has four side walls 23 establishing a casing rectangular in form, as clearly illustrated in Figs. l and 2' of the drawings. It is to be understood, however, that fixtures of' the general character referred to vary in form and may be'various types of polygonal structures, or may even be round, as circumstances require. It is to be understood that as the fixture case varies, the present invention may be modified or varied accordingly, so that the principles of the invention are suitably carried out.

The illuminating means illustrated in the drawings involves a reflector 30 in the case and it is shown as including a suitable socket 3l carrying a globe 32. The socket 3i is shown supported on a suitable mounting bracket 33 in the desired position relative to a fitting 34 carried by one wall 20 of the case, which fitting carries or cooperates with a flexible duct 35 provided to carry wires 36.

The closure D provided in the case illustrated involves a rectangular frame 40 which may be formed of metal or the like, and a panel 13| of suitable material such as glass or the like carried by the frame. The frame is shown as somewhat larger than the open end of the case B and its peripheral portion is shaped, for instance, inwardly turned, so that there are marginal lips 42 of the frame that engage the outer face I3 of the wall facing A, as clearly illustrated in Fig. 1 of the drawings.

The coupling means E illustrated in the drawings connect the closure D with the case B so that the closure can be readily operated between the positions shown in Figs. 1 and 4 of the drawings. The means E involves, generally, a pair of arms 45 pivotally carried by the case and pivotally connected to a suitable flange 46 in the frame 4U. Springs 41 are related to the arms and are such as to normally yieldingly hold the arms in the position shown in Fig. 1, where the closure is in the desired operating position. The present invention is in no way concerned with this feature or detail of the xture and the means El shown in the drawings is merely a typical structure of this kind and is of the particular construction disclosed and. claimed in the application of Samuel L. Beber and Jerome H. Feig, filed August 1'7, 1950, bearing Serial No. 180,004, entitled Lighting Fixture.

The present invention provides one or more units or clamp means serving to mount the case B in the desired manner in connection with the wall facing A. In a typical case Where a light fixture is being mounted two units of the present invention can be employed to advantage, and in such case these are alike and are applied to walls 20 of the oase B that are` opposite each other, as is shown in the drawings.

The clamp means, or each unit of the clamp means, embodying the present invention involves, generally, an inner or inside jaw 50, an outer 01 outside jaw 5|, and means 52 connecting the jaws together and to the wall of the case.

The inside jaw 5|) of the clamp means is carried by the wall ZD of the case, preferably at the inner side thereof, and it has one or more grippers that project from the outer side of the wall 26 and are so located as to engage or bear against the inner side or surface l2 of the wall facing A. In the particular construction illustrated the jaw 5i) involves an elongate strip or band of suitable material, such as sheet metal, forming a body 55, and o-ne or more grippers 56 is carried by the body. In the particular case illustrated two grippers 56 are carried by the body 55 and are spaced apart lengthwise of the body so that there is a gripper extending to or adjacent each end of the body. The grippers 56 are at flange-like projections on the innermost edge 5'! of the body 55, and they are in a plane normal to that of the body 55, so that the body is L-shaped in cross-sectional conguration, as will appear from Figs. 7 and 9 of the drawings.

The body 55 of the jaw 50, being an elongate lat sheet metal part, is adapted to be arranged at the inner side 53 of wall 2U, and in a typical arrangement of parts it may be arranged against or adjacent the side 5B of wall 2D, as shown in Fig. 7 of the drawings. The body 55 is preferably made of such size, for instance, of such width, that when it is in operating position at the inner side of wall 2U its outer edge 59 is substantially ush With the outer edge 26 of the case. In accordance with the invention one or more openings 60 is provided in the wall-20 to pass or accommodate the gripper or grippers 56 of the jaw 5|). It is preferred,in practice, that the openings 60 be elongate or slotlike in form, and they are so located in wall 20 as to occur immediately inside of the inside face of the wall I2 of the facing A, as is clearly shown in Fig. 6 of the drawings. Where the jaw 5|! has two grippers 56, as shown in Fig. 9, there are two slotlike openings 60 in the wall 20 and these are of such size, both as to width and length, as to suitably pass or accommodate the grippers 56, as shown in Fig. of the drawings. By providing spaced grippers on the jaw 50 there may be spaced openings 60 in the wall 20 so that the provision of the openings does not materially weaken or impair the desired structural characteristics of the case. Furthermore, it is desirable that the openings S be made only large enough to suitably pass the grippers so that there are no undesirable openings in the case when the structure is in operation. When the inside jaw 50 is in operating position, as shown in Fig. 7, the grippers 56 of that jaw project from the outer side of wall 20 and are in position to engage or bear against the inner face or side 2 of facing A.

The outside jaw 5| may, in practice, be similar, generally, to the jaw just described, for instance, it may have an elongate body 6| and one or more grippers 62 projecting from the body. In the case illustrated there is a single gripper 62 projecting from body 6|, and it projects from the outer edge 63 of the body. The gripper 62 is preferably a flat flange-like projection on the body in a plane normal to that of the body, so that the jaw 5| is substantially L-shaped in cross-sectional configuration, as clearly shown in Fig. 10 of the drawings.

In a typical arrangement of parts the jaw 62 of body 6| is engaged with or over the body '55 of jaw 50, and the gripper 62 of jaw 5| extends over the edges 26 and 59 of wall 2G and jaw 56, respectively, to overlap and engage the outer surface |3 of facing A of the wall W.

The connecting means 52 serves to connect the jaws 50 and 5| together and to the wall 2B of the case, and in practice may involve one or more light units or units of construction serving this purpose. In the case illustrated two units of connecting means are provided in connection with the related jaws 5U and 5|, and are spaced apart lengthwise of the jaws. Each such unit of the means 52 preferably involves a projection on or carried by the wall 20 so that it projects from the inner side 53 of the wall 20 and the bodies of the jaws have openings that accommodate or cooperate with that projection. In accordance with the broader principles of the invention the projection of means 52 may vary widely in form and construction. However, in practice it is ad vantageous to establish the projection as a screw, in which case a suitable screw has a shank I0 threaded to or through the wall 25 and has a head 1| on the inner end of the shank and spaced from the inner side 58 of wall 26. When the jaw 50 is employed so that its body 55 is adjacent the wall 5U, this body 55 may be provided with a simple aperture in the form of a round opening T2 of such size as to freely pass the shank 'Hl of the projection on wall 21|. The openingin the body 6| of jaw 5| may be somewhat more complex or may be of special form, and in the case i1- lustrated in Figs. 1 to 10 of the drawings the opening in body 6| of jaw 5| is a bayonet type opening or slot having a shank passing portion 15 and an linner shank holding portion '76." The shank passlThe portion I6 of the openings in body 6l is an elongate slot continuing from the portion l in a direction generally lengthwise of the body. This portion 16 of the opening is preferably pitched 'orfinclined relative to the longitudinal axis of jaw 6| in a manner such as is shown in Fig. 10 Iof the drawings.

With the construction above described the outside'jaw 5l can be applied by manipulating it so that the portion 'l5 o the opening passes the shank of the screw projection on wall 2Q, allow- -ing the jaw to pass or be entered between the head -1l 'of the screw and the body 55 of jaw 65.

"When the shank is opposite, or in register with -the'end of the open portion 'I6 that joins the portion 15, body 55 is in position so that it can be moved lengthwise with consequent wedging or wedge action, which causes the gripper 62 of jaw `5l to move toward the grippers 56 of jaw 50. This action is continued until the grippers are both in tight or suitable gripping engagement with the facing A of the wall W. In practice, it is desirable that the incline or pitch of the portion I8 be slight, so that when the jaw 5i is once suitably pressed into operating position the parts will remain in that position until deliberately operated in a manner to release the structure. If desired, the structure can be set o-r locked after the jaws have been engaged, as by tightening the screw projections of the means 52. By employing screws to form the projections above described these elements of the structure serve not only as part of the means holding or cooperating with the jaws but they also serve as a setting or locking means that can be operated to make the construction secure against any possible release or failure.

In the form of the invention illustrated in Figs. l1 and l2, the construction as a whole may be identical with that hereinabove described, except that the opening or openings provided in the body (5|a of jaw 51a are slightly different in form from those above described. The projection receiving portions 75a of the openings in body 6ta are simply large, round openings, sufficiently large to accommodate or pass the heads 'H of the projections of the wall 20. The portions '16a of the openings extend from the openings a and are elongate, inclined openings having wedge action, the same as the openings 'I6 above described.

In this form of the invention screw means is illustrated which can, if desired, be used in connection with the structure rst described. The screw means, as illustrated, involves a single set screw 8D in an ear 8l projecting from the body 6lla of jaw 5 IB. The screw 8i) is disposed to extend parallel with the body 6Ia and the ear which carries the screw is so located that the screw bears against a wall 2B of the case adjacent the wall carrying the clamp jaws, and the head 82 of the screw 80 is located so that it can be easily or conveniently engaged by a screw driver or the like. From Figs. 11 and 12 it will be apparent how the screw 8l! can be operated to shift the clamp jaw 5 la longitudinally and thus cause effective eamming or wedge action, setting the clamp construction so that the facing of the wall W is effectively gripped. The screw 8U not only serves to thus shift or operate the jaw 5la of the clamp means, but when the structure has been once set through this action the screw 80 serves as a retainer Vor set screw holding the vclampmeans set or engaged until such time as the screwr `is deliberately operated to release the structure.H

It is to be observed that the gripper 62 'of outside jaw 5l is such as to overhang or overlap the facing A of wall W adjacent the opening 25, providing an effective grip, whereas when the closure D is in position, as shown in Fig. 1,

'the gripper 62 is within or beneath a lip 42 of frame i0 and is thus concealed.

It is to be noted that the gripping device or means provided by the present invention, as hereinabove described, enables the case B ofthe `iixture to be handled freely, without the jaws and 5l being connected to the case. Furthermore, it is to be observed that the case B may have its open end portion formed as shown in the drawings, so that it is plain and wholly withvout flanges, lips, ears, or other protuberances.

Under such circumstances when a fixture is to be applied to a wall, as for instance to a ceiling vportion of a wall, the case can be applied to the facing A at the point where the fixture is desired, and a marking device such as a pencil'P can be employed to draw a line around the case after the fashion illustrated in Fig. 5 of the drawings. If the wall is then cut along the line thus scribed, the desired opening 25 is provided in the facing A, and if reasonable care is employed in cutting this opening the case A will slidably t into the opening in a manner such as is shown throughout the drawings.

From the foregoing description it will be apparent that in the mounting of a casing employing the present invention, after the opening 25 has been formed in facing A, the case B of the fixture can first be connected with a flexible duct 35 of suitable length, and can then be moved into the wall through the opening 25 until the case isV related to the facing A, as shown in Fig. 6, or it can even be moved somewhat inward beyond this position. The inside jaw 50 can then be arranged or inserted as shown in Fig. 8, whereupon the outside jaw 5I can be installed, which operation can be performed either before or after the screw projections are applied to the wall 2li, as by being passed through the openings 72, and into suitable openings provided in the wall 29. lWhen the clamp jaws have been suitably set, as hereinabove described, either by simple manual shifting, or by operation of a set screw such as .the screw 8l), the structure can, if desired, be locked by setting of the screw projections that hold the jaws to the walls 20.

It is to be noted that with the construction provided by the present invention a case such as the case of a xture or a case designed to have any suitable function, can be applied to an yelement such as the facing of a wall, by merely vcutting, a suitable opening in that facing. The structure of the invention provides for clamping of the structure in place, and requires application of no screws, nails, or other elements to the facing A that might cause chipping, damage or mutilation thereof. Furthermore, it is to be observed that the application of the structure of the present invention to a facing A requires no pounding, jarring, or forcing such as is likely to chip, crack, or injure plaster, but rather, involves simple clamping action, and the structure is such that if desired the clamp construction can be released, freeing the case from the facing A, making possible removal whenever desired.

Having described only typical preferred forms and applications of my invention, I do not wish to be limited or restricted to the specific details herein set forth, but wish to reserve to myself any variations or modifications that may appear to those skilled in the art and fall within the scope of the following claims:

Having described my invention, I claim:

1. In combination, a case having a wall with an opening, two relatively movable jaws having overlying bodies inside the case and adjacent the wall and having spaced opposed grippers projecting from the bodies and from the outside of said wall, a gripper of one jaw being passed by said opening, the bodies of the jaws having registering openings therein, and a projection on the wall projecting inward therefrom and engaged in the openings in the bodies of the jaws connecting the bodies together and to the wall, the opening in one jaw being a cam slot.

2. In combination, a case having a wall with an aperture therethrough and spaced from an edge of the wall, two relatively movable elongate jaws having bodies inside said wall and having spaced opposed grippers projecting from the bodies and from the outside of said wall, the body of one jaw being engaged against the inner side of the wall and a gripper thereon being engaged through the aperture and located thereby in a predetermined position relative to said edge, the body of the other jaw being engaged over and against that of the rst mentioned jaw and a gripper thereon projecting past the wall to be opposite and spaced from the first mentioned gripper and outward from said edge, and a projection on the wall engaged through openings in the bodies of the jaws connecting the bodies and holding them relative to the wall, the opening in the body of said other jaw being a cam slot extending longitudinally of said other jaw to effect shifting of the gripper thereof relative to said edge.

3. In combination, a case having a wall with an outer edge and with an aperture therethrough spaced from the edge, two relatively movable jaws having elongate bodies inside said wall and having spaced opposed grippers projecting from ,l

the bodies and from the outside of said wall, the body of one jaw being engaged against the inner side of the wall and a gripper thereon being engaged through the aperture, the body of the other jaw being engaged over and against that of the rst mentioned jaw and a gripper thereon projecting past said edge of the wall to be opposite and spaced from the rst mentioned gripper, and a screw threaded to the wall and engaged through openings in the bodies of the jaws connecting the bodies and holding them relative to the wall, the opening in the body of said other jaw being a cam slot inclined longitudinally of that body whereby the body of said other jaw can be shifted longitudinally to vary spacing of the gripper thereon relative to the said edge.

4. In combination, a case having a wall with an exposed edge and with an elongate aperture therethrough spaced from and parallel with said edge, two relatively movable jaws having bodies inside said wall and having spaced opposed elongate grippers projecting from the bodies and from the outside of said wall, the body of one jaw being engaged with the inner side of the wall and a gripper thereon being engaged through the aperture and guided thereby parallel with said edge, the body of the other jaw being engaged over that of the first mentioned jaw and a gripper thereon projecting past the Wall to be opposite and spaced from the rst mentioned gripper, and a screw carried by the wall and engaged through openings in the bodies of the jawsconnecting the bodies and holding them relative to the wall, the opening in the body of said other jaw being an elongate aperture removed from the margins of the body and inclined lengthwise of the body.

5. In combination, a case having a wall with an exposed edge and with an aperture therethrough spaced from the edge, two relatively movable jaws having elongate bodies inside said wall and having spaced opposed grippers projecting from the bodies parallel therewith and projects from the outside of said wall, the body of one jaw being engaged with the inner side of the wall and a gripper thereon being engaged through the aperture, the body of the other jaw being engaged over that of the first mentioned jaw and a gripper thereon projecting past the wall to the opposite and spaced from the first mentioned gripper, and a projection on the wall engaged through openings in the bodies of the jaws connecting the bodies and holding them relative to the wall, the opening in the body of said other jaw being a slot with angularly related portions, one of which opens at an edge of the body.

6. In combination, a case having a wall with an exposed edge and with an aperture therethrough, spaced from said edge, two relatively movable jaws having bodies inside said wall and having spaced opposed grippers projecting from the bodies and from the outside of said wall, the body of one jaw being engaged with the inner side of the wall and a gripper thereon being engaged through the aperture, the body of the other jaw being engaged over that of the rst mentioned jaw and a gripper thereon projecting past the wall to be opposite and spaced from the iirst mentioned gripper, and a clamp screw carried by the wall and engaged through openings in the bodies of the jaws connecting the bodies and holding them relative to the wall, the screw having a head inside the case, the opening in the body of said other jaw being a slot with angularly related portions, one of which opens at an edge of the body, the gripper on the last mentioned body projecting from an edge thereof opposite to that at which the slot opens.

7. In combination, a case having a wall with an aperture therethrough, two relatively movable jaws having bodies inside said wall and having spaced opposed grippers projecting from the bodies and from the outside of said wall, the body of one jaw being engaged with the inner side of the wall and a gripper thereon being engaged through the aperture, the body of the other jaw being engaged over that of the rst mentioned jaw and a gripper thereon projecting past the wall to be opposite and spaced from the nrst mentioned gripper, a projection on the wall engaged through openings in the bodies of the jaws connecting the bodies and holding them relative to the wall, the opening in the body of said other jaw being a cam slot, and means operable to shift the body of said other jaw relative to the projection.

8. In combination, a case having a wall with an aperture therethrough, two relatively movable jaws having bodies inside said wall and having spaced opposed grippers projecting from the bodies and from the outside of said wall, the body of one jaw being engaged with the inner side of the wall and a gripper thereon being engaged through the aperture, the body of the 11 otherV jaw being engaged over that of the rst mentioned jaw and a gripper thereon projecting past the wall to be opposite and spaced from the first mentioned gripper, a. projection on the wall engaged through openings in the bodies of the jaws connecting the bodies and holding them relative to the wall, the opening in the body of said other jaw being a cam slot, and a screw operable to shift the body of said other jaw relative to the projection.

9. In combination, a case having an end portion that is open and having a side wall a part of which is at said open end portion of the case and has an opening therein, two relatively movable jaws separate from the case and having overlapping bodies inside said wall and having spaced opposed grippers projecting from the bodies and from the outside of said wall, a gripper of one jaw extending through said opening in the side wall, and means releasably connecting the overlapping bodies of the jaws together and to the inside face of said side Wall and including a manually operable part inside the case.

10. In combination, a case with an end portion that is open, the case having a, side wall with an outer edge at the open portion of the case and having an elongate opening spaced inward of said edge and extending parallel therewith, two relatively movable jaws separate from the case and having overlapping bodies inside the case and adjacent the inside face of said wall and having elongate substantially parallel grippers projecting from the bodies, one gripper extending through the opening in the side wall and one extending over said edge establishing spaced opposed relatively movable grippers extending out from said side wall, and means releasably con- 12 necting the jaws 'together and to saidside wall and operable from the interior of the case.

11. In combination, a case with an end portion that is open, the case having a side wall with an outer edge at th-e open portion of the case and with a slot spaced inward of and parallel with said edge, two relatively movable jaws adapted to shift relative to the case and having overlapping bodies in the case adjacent the inner side of said side Wall and having grippers projecting from the bodies at substantially right angles thereto, the body of one jaw being engaged against the inner side of the side wall and a gripper on said body extending through the slot while the body of the other jaw is engaged over and against that of the rst mentioned jaw and has a gripper thereon engaged over said edge of the side Wall, the grippers being opposed and projecting at the outer side of the side wall, and screw means connecting the jaws together and to said side wall including an operating head exposed at the inside of the case.

References Cited in the fue of this patent,

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